STAR - Global Vegetation Health Products : Equatorial Crossing Time (ECT) for NOAA Polar Satellites

The time series of Equitorial Crossing Time (ECT) was plotted for satellites which data may be used for global vegetation monitoring.
Data source:
ECT data of NOAA satellites with AVHRR sensors (N7 to N19) and METOP satellites (M1,M2,M3) were obtained from:
http://www.ospo.noaa.gov/Products/ppp/navpage.html
ECT data of NOAA satellites with VIIRS sensors (NPP, N20, N21) were calcualted directly
from the VIIRS granules (using GITCO files).
Daily ECT data were compiled from above original data.
This plot was updated weekly.
